Abstract: A display apparatus for receiving a picture signal having video and synchronizing components includes a matrix of display cells arranged in an array of M columns by N rows. Display cells in the matrix are individually addressable by row and column signals so as to receive the video component of the picture signal in response thereto. A first shift circuit coupled to the matrix provides the column signals in response to a first clocking signal. A second shift circuit coupled to the matrix provides the row signals in response to a second clocking signal. A synchronizing detector or gate circuit coupled to the first and second shift circuits receives the synchronizing component of the picture signal and produces the second clocking signal in response to a preselected pointer signal from the first shift circuit. A phase locked loop circuit coupled to the first shift circuit receives the second clocking signal and produces the first clocking signal in response thereto.

Abstract: A first composite video signal may include attendant ghosts and sometimes includes in a prescribed L.sup.th line of each field during the vertical blanking interval one of a cycle of M ghost-canceling reference (GCR) signals of prescribed magnitude and respective phasing. Filter circuitry generates a second composite video signal in response to the first composite video signal, which is adjusted in response to filter programming signals generated by a computer storing a ghost-free GCR signal. The computer receives a GCR signal with attendant ghosts and compares it to the stored ghost-free GCR signal, thereby carrying out correlation procedures for calculating the filter programming signals. The second composite video signal is a response to the first composite video signal in which the attendant ghosts are lessened.

Abstract: A digital convergence apparatus using two different kinds of data to correct the convergence of odd and even scanning lines, respectively. A first memory stores data for the convergence correction corresponding to plural correction executing points aligned in the horizontal or vertical direction of a screen. A first static convergence data memory stores a first static convergence correction data for correcting the entire screen in the same direction, a second static convergence data memory stores a second static convergence correction data different from the first static convergence correction data only by an amount corresponding to the distance between the scanning lines. Selecting means select the output of the first or the second static convergence data memory according to the odd field period or the even field period. Adding means add the output of the selecting means to the data stored in the first memory.

Abstract: Disclosed is a method and apparatus for combining first and second video signals to produce a composite video signal for display. First and second video sources generate first and second video signals. A chroma key circuit is included for comparing each pixel of the first video signal with a preselected color and generating logic signals indicating whether or not each pixel matches the preselected color. An input lock map stores each of the logic signals when field data is in a first state and provides the logic signals on an output line thereof when the field data is in a second state. A frame buffer selectively receives (1) a complement of the logic signals when the field data is in the first state and (2) the logic signals when the field data is in the second state.

Abstract: A cathode ray tube display in which a signal for detection of a cathode current is inserted into a part of the vertical blanking period of the video signal to be displayed, a cathode current corresponding to the signal for detection is detected, and a cathode voltage or a grid voltage is negative feedback controlled so that the detected cathode current becomes constant, thereby stabilizing the cathode current. The display has a local overscan circuit for executing a vertical scan on the screen with a width larger than a predetermined scan width only at a timing of the cathode current detecting signal inserted for a vertical blanking period, and even in the case where an underscan system to scan by a width smaller than a predetermined display screen width is used as a scan system of the screen display. The invention prevents a harmful visible display image by the cathode current detecting signal appears on the screen.

Abstract: An electronic program schedule system with access to both stored television program schedule information and data feeds containing status information for live programs such as sporting events. The system includes a data processor for receiving program schedule information for a plurality of programs and data feeds containing status information for certain of the programs, and a video display generator for generating a display signal simultaneously comprising information from both the stored schedule information and the received data feed. The system is further provided with user control means such as a remote controller for generating user control commands and transmitting signals to the data processor in response thereto so as to control the content of the display signal. The display signal may be displayed on a display apparatus such as a television receiver.

Abstract: In a method and a circuit for detecting and concealing video signal errors caused by vertically extending film scratches during television film scanning, an error signal is derived at error locations generated by disturbed pixels and is used in the form of a control signal for concealing errors in the video signal. The error signal is generated only when an adjustable, locally bounded scratch width in the horizontal direction is not exceeded and when each scratch essentially extends vertically, and when the scratch length substantially corresponds to the film frame height. Finally, the disturbed locations in the video signal are replaced by the corresponding low-pass-filtered video signal with the aid of the error signal.

Abstract: A skin-color-area detector generates a skin-color-area signal from an input video signal. An average luminance level detector generates an average luminance level signal from a luminance signal. These signals are transmitted to a skin-color-corrector to generate skin-color-correction signals. At a saturation controller and at a luminance signal corrector which each receive the skin color corrections signals, skin-color is optimumly corrected. Thereby reproduction quality of skin-color signals in video signals is enhanced.

Abstract: A projection tube featuring good accuracy in controlling a slant angle between a cathode ray tube and a projection lens, an excellent focusing performance, and further low production cost, and also a video projection systems which utilizes the foregoing projection tube. There are a spacing member to control the slant angle and according to the slant angle, both being built between a cathode ray tube and a radiator.

Abstract: The gain of a variable gain amplifier for amplifying a video signal is changed in accordance with a brightness correction control signal that is output from a waveform ROM. The shape of the output signal of the waveform ROM is changed in accordance with a signal indicating the scanning position which signal is deformed in accordance with an external signal indicating a deviation of a hot spot.

Abstract: A screen detecting system of a wide screen television for detecting blank top and bottom areas of a video frame contained in conventional video signals and generating top and bottom display limits is disclosed. The top and bottom display limits are used by a display control system of the wide screen television to eliminate the blank top and bottom areas.

Abstract: Two techniques are used to display personal computer video on a general purpose video display such as a television set instead of on a monitor. First, the image area is defined to be smaller at the operating system level allowing the graphical user interface to appropriately process images. Second, the output video signal is delayed with respect to horizontal and vertical trigger pulses to properly align the image on the screen. This results in an easy to interpret image even on a low resolution television set and software compatibility on any general purpose video display.

Abstract: To make it possible to receive a modulated signal which is obtained by suppressing a carrier signal such as a high definition TV signal which is digitally demodulated such as QAM (quadrature amplitude modulation), a receiver of the double super-heterodyne system having the first and second mixers 9 and 13 is a basic constitution. A band pass filter having a flatness in pass band and a small deviation of group delay which will prevent the demodulation of a high definition TV signal from degradation is used a first intermediate frequency filter 11. An SAW filter is used as a second intermediate frequency filter 16. The third mixer 28 for converting a second intermediate frequency signal to a third intermediate frequency signal in frequency is installed and the frequency of the third intermediate frequency signal to be converted is set to a value lower than the frequency of the second intermediate frequency signal.

Abstract: The apparatus and method described herein provides for detecting or measuring the relative timing of the audio and video portions of an audio visual program by inspection of the opening and closing of the mouth of a speaker, and comparing that opening and closing to the utterance of sounds associated therewith.